Doug Anson / endpoint_mqtt

mqtt specific components for the impact mbed endpoint library

Dependents:   mbed_mqtt_endpoint_ublox_ethernet mbed_mqtt_endpoint_ublox_cellular mbed_mqtt_endpoint_nxp

MQTTTransport.cpp@49:965a65122c0f, 2014-07-08 (annotated)

Committer:
ansond
Date:
Tue Jul 08 14:59:39 2014 +0000
Revision:
49:965a65122c0f
Parent:
43:14ccc830d6a6 
ported to new MQTT library

Who changed what in which revision?

UserRevisionLine numberNew contents of line
ansond 0:a3fc1c6ef150 1 /* Copyright C2013 Doug Anson, MIT License
ansond 0:a3fc1c6ef150 2 *
ansond 0:a3fc1c6ef150 3 * Permission is hereby granted, free of charge, to any person obtaining a copy of this software
ansond 0:a3fc1c6ef150 4 * and associated documentation files the "Software", to deal in the Software without restriction,
ansond 0:a3fc1c6ef150 5 * including without limitation the rights to use, copy, modify, merge, publish, distribute,
ansond 0:a3fc1c6ef150 6 * sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is
ansond 0:a3fc1c6ef150 7 * furnished to do so, subject to the following conditions:
ansond 0:a3fc1c6ef150 8 *
ansond 0:a3fc1c6ef150 9 * The above copyright notice and this permission notice shall be included in all copies or
ansond 0:a3fc1c6ef150 10 * substantial portions of the Software.
ansond 0:a3fc1c6ef150 11 *
ansond 0:a3fc1c6ef150 12 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING
ansond 0:a3fc1c6ef150 13 * BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
ansond 0:a3fc1c6ef150 14 * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM,
ansond 0:a3fc1c6ef150 15 * DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
ansond 0:a3fc1c6ef150 16 * OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
ansond 0:a3fc1c6ef150 17 */
ansond 0:a3fc1c6ef150 18
ansond 0:a3fc1c6ef150 19 #include "mbed.h"
ansond 42:297585f8e7bd 20
ansond 0:a3fc1c6ef150 21 #include "MQTTTransport.h"
ansond 0:a3fc1c6ef150 22
ansond 0:a3fc1c6ef150 23 // Endpoint Support
ansond 0:a3fc1c6ef150 24 #include "MBEDEndpoint.h"
ansond 0:a3fc1c6ef150 25
ansond 0:a3fc1c6ef150 26 // EmulatedResourceFactory support
ansond 0:a3fc1c6ef150 27 #include "EmulatedResourceFactory.h"
ansond 43:14ccc830d6a6 28
ansond 49:965a65122c0f 29 // our instance pointer
ansond 49:965a65122c0f 30 MQTTTransport *_mqtt_instance = NULL;
ansond 49:965a65122c0f 31
ansond 0:a3fc1c6ef150 32 // MQTT callback to handle received messages
ansond 49:965a65122c0f 33 void _mqtt_message_handler(MQTT::MessageData& md) {
ansond 0:a3fc1c6ef150 34 char buffer[MAX_MQTT_MESSAGE_LENGTH+1];
ansond 0:a3fc1c6ef150 35 char rcv_topic[MQTT_IOC_TOPIC_LEN+1];
ansond 0:a3fc1c6ef150 36
ansond 49:965a65122c0f 37 MQTT::Message &message = md.message;
ansond 49:965a65122c0f 38
ansond 0:a3fc1c6ef150 39 memset(buffer,0,MAX_MQTT_MESSAGE_LENGTH+1);
ansond 0:a3fc1c6ef150 40 memset(rcv_topic,0,MQTT_IOC_TOPIC_LEN+1);
ansond 49:965a65122c0f 41
ansond 49:965a65122c0f 42 int length = message.payloadlen;
ansond 49:965a65122c0f 43 if (length > MAX_MQTT_MESSAGE_LENGTH) length = MAX_MQTT_MESSAGE_LENGTH;
ansond 49:965a65122c0f 44 memcpy(buffer,message.payload,length);
ansond 49:965a65122c0f 45 strcpy(rcv_topic,(char *)md.topicName.cstring);
ansond 0:a3fc1c6ef150 46
ansond 0:a3fc1c6ef150 47 if (_mqtt_instance != NULL) {
ansond 49:965a65122c0f 48 if (_mqtt_instance->isPongMessage(rcv_topic,buffer,length))
ansond 0:a3fc1c6ef150 49 _mqtt_instance->processPongMessage(buffer,length);
ansond 49:965a65122c0f 50 else
ansond 0:a3fc1c6ef150 51 _mqtt_instance->processMessage(_mqtt_instance->getEndpointNameFromTopic(rcv_topic),buffer,length);
ansond 0:a3fc1c6ef150 52 }
ansond 0:a3fc1c6ef150 53 }
ansond 49:965a65122c0f 54
ansond 0:a3fc1c6ef150 55 // default constructor
ansond 0:a3fc1c6ef150 56 MQTTTransport::MQTTTransport(ErrorHandler *error_handler,void *endpoint,MBEDToIOCResourceMap *map) : Transport(error_handler,endpoint) {
ansond 49:965a65122c0f 57 this->m_ipstack = new MQTTEthernet();
ansond 49:965a65122c0f 58 this->m_mqtt = new MQTT::Client<MQTTEthernet, Countdown>(*this->m_ipstack);
ansond 0:a3fc1c6ef150 59 _mqtt_instance = this;
ansond 0:a3fc1c6ef150 60 this->m_map = map;
ansond 0:a3fc1c6ef150 61 this->m_ping_counter = 1;
ansond 0:a3fc1c6ef150 62 this->m_ping_countdown = MQTT_PING_COUNTDOWN;
ansond 0:a3fc1c6ef150 63 this->initTopic();
ansond 0:a3fc1c6ef150 64 }
ansond 0:a3fc1c6ef150 65
ansond 0:a3fc1c6ef150 66 // default destructor
ansond 0:a3fc1c6ef150 67 MQTTTransport::~MQTTTransport() {
ansond 0:a3fc1c6ef150 68 this->disconnect();
ansond 0:a3fc1c6ef150 69 }
ansond 0:a3fc1c6ef150 70
ansond 0:a3fc1c6ef150 71 // init our topic
ansond 0:a3fc1c6ef150 72 void MQTTTransport::initTopic() {
ansond 0:a3fc1c6ef150 73 MBEDEndpoint *endpoint = (MBEDEndpoint *)this->getEndpoint();
ansond 0:a3fc1c6ef150 74 char *endpoint_name = endpoint->getEndpointName();
ansond 0:a3fc1c6ef150 75 memset(this->m_topic,0,MQTT_IOC_TOPIC_LEN+1);
ansond 0:a3fc1c6ef150 76 sprintf(this->m_topic,MQTT_IOC_TOPIC,endpoint_name);
ansond 0:a3fc1c6ef150 77 }
ansond 0:a3fc1c6ef150 78
ansond 0:a3fc1c6ef150 79 // get our topic
ansond 0:a3fc1c6ef150 80 char *MQTTTransport::getTopic() { return this->m_topic; }
ansond 0:a3fc1c6ef150 81
ansond 0:a3fc1c6ef150 82 // get the IOC <--> MBED resource map
ansond 0:a3fc1c6ef150 83 MBEDToIOCResourceMap *MQTTTransport::getMap() { return this->m_map; }
ansond 0:a3fc1c6ef150 84
ansond 0:a3fc1c6ef150 85 // pull the endpoint name from the MQTT topic
ansond 0:a3fc1c6ef150 86 char *MQTTTransport::getEndpointNameFromTopic(char *topic) {
ansond 0:a3fc1c6ef150 87 if (topic != NULL) {
ansond 7:8a4a61202b36 88 memset(this->m_endpoint_name,0,PERSONALITY_NAME_LEN+1);
ansond 0:a3fc1c6ef150 89 char trash[MQTT_IOC_TOPIC_LEN+1];
ansond 0:a3fc1c6ef150 90 char ep[MQTT_IOC_TOPIC_LEN+1];
ansond 0:a3fc1c6ef150 91 memset(trash,0,MQTT_IOC_TOPIC_LEN+1);
ansond 0:a3fc1c6ef150 92 memset(ep,0,MQTT_IOC_TOPIC_LEN+1);
ansond 0:a3fc1c6ef150 93 bool done = false;
ansond 0:a3fc1c6ef150 94 int length = 0; if (topic != NULL) length = strlen(topic);
ansond 0:a3fc1c6ef150 95 for(int i=length-1;i>=0 && !done;--i) if (topic[i] == '/') { topic[i] = ' ' ; done = true; }
ansond 0:a3fc1c6ef150 96 sscanf(topic,"%s%s",trash,ep);
ansond 0:a3fc1c6ef150 97 //this->logger()->log("MQTT: Topic:[%s] trash:[%s] ep:[%s]",topic,trash,ep);
ansond 0:a3fc1c6ef150 98 if (strlen(ep) > 0) {
ansond 0:a3fc1c6ef150 99 if (strcmp(ep,MQTT_IOC_ALL_ENDPOINT) != 0) {
ansond 0:a3fc1c6ef150 100 // just insert the name and let the parser determine if its for us or not...
ansond 0:a3fc1c6ef150 101 strncpy(this->m_endpoint_name,ep,strlen(ep));
ansond 0:a3fc1c6ef150 102 }
ansond 0:a3fc1c6ef150 103 else {
ansond 0:a3fc1c6ef150 104 // this is a broadcast message - so we need to process it
ansond 0:a3fc1c6ef150 105 MBEDEndpoint *endpoint = (MBEDEndpoint *)this->getEndpoint();
ansond 0:a3fc1c6ef150 106 char *endpoint_name = endpoint->getEndpointName();
ansond 0:a3fc1c6ef150 107 strcpy(this->m_endpoint_name,endpoint_name);
ansond 0:a3fc1c6ef150 108 }
ansond 0:a3fc1c6ef150 109 }
ansond 0:a3fc1c6ef150 110 //this->logger()->log("MQTT Topic (discovered): %s Original: %s",this->m_endpoint_name,topic);
ansond 0:a3fc1c6ef150 111 return this->m_endpoint_name;
ansond 0:a3fc1c6ef150 112 }
ansond 0:a3fc1c6ef150 113 //this->logger()->log("MQTT Topic (discovered): NULL Original: %s",topic);
ansond 0:a3fc1c6ef150 114 return NULL;
ansond 0:a3fc1c6ef150 115 }
ansond 0:a3fc1c6ef150 116
ansond 0:a3fc1c6ef150 117 // process a MQTT Message
ansond 0:a3fc1c6ef150 118 void MQTTTransport::processMessage(char *message_name,char *payload, unsigned int payload_length) {
ansond 0:a3fc1c6ef150 119 char message_type[MQTT_PAYLOAD_SEGMENT_LEN+1];
ansond 0:a3fc1c6ef150 120 char message_verb[MQTT_PAYLOAD_SEGMENT_LEN+1];
ansond 0:a3fc1c6ef150 121 char message_value[MQTT_PAYLOAD_SEGMENT_LEN+1];
ansond 0:a3fc1c6ef150 122 char message_opt[MQTT_PAYLOAD_SEGMENT_LEN+1];
ansond 0:a3fc1c6ef150 123
ansond 0:a3fc1c6ef150 124 // initialize
ansond 0:a3fc1c6ef150 125 memset(message_type,0,MQTT_PAYLOAD_SEGMENT_LEN+1);
ansond 0:a3fc1c6ef150 126 memset(message_verb,0,MQTT_PAYLOAD_SEGMENT_LEN+1);
ansond 0:a3fc1c6ef150 127 memset(message_value,0,MQTT_PAYLOAD_SEGMENT_LEN+1);
ansond 0:a3fc1c6ef150 128 memset(message_opt,0,MQTT_PAYLOAD_SEGMENT_LEN+1);
ansond 0:a3fc1c6ef150 129
ansond 0:a3fc1c6ef150 130 // get our endpoint
ansond 0:a3fc1c6ef150 131 MBEDEndpoint *endpoint = (MBEDEndpoint *)this->getEndpoint();
ansond 0:a3fc1c6ef150 132 char *endpoint_name = endpoint->getEndpointName();
ansond 0:a3fc1c6ef150 133
ansond 0:a3fc1c6ef150 134 // DEBUG
ansond 0:a3fc1c6ef150 135 //this->logger()->log("Endpoint:[%s] Target: [%s]",endpoint_name,message_name);
ansond 0:a3fc1c6ef150 136
ansond 0:a3fc1c6ef150 137 // only respond if its for our node
ansond 0:a3fc1c6ef150 138 if (strcmp(endpoint_name,message_name) == 0) {
ansond 0:a3fc1c6ef150 139 // format of the MQTT message: message_type:verb|Parameter_X:value|keyword:optional_data
ansond 0:a3fc1c6ef150 140 char buffer[MAX_MQTT_MESSAGE_LENGTH+1];
ansond 0:a3fc1c6ef150 141 memset(buffer,0,MAX_MQTT_MESSAGE_LENGTH+1);
ansond 0:a3fc1c6ef150 142 memcpy(buffer,payload,payload_length);
ansond 0:a3fc1c6ef150 143 int count = 0; for(int i=0;i<payload_length;++i) if (payload[i] == ':') ++count;
ansond 0:a3fc1c6ef150 144 for(int i=0;i<payload_length;++i) {
ansond 0:a3fc1c6ef150 145 if (buffer[i] == ':') {
ansond 0:a3fc1c6ef150 146 if (i < (payload_length-1)) buffer[i] = ' ';
ansond 0:a3fc1c6ef150 147 else buffer[i] = '\0';
ansond 0:a3fc1c6ef150 148 }
ansond 0:a3fc1c6ef150 149 }
ansond 0:a3fc1c6ef150 150 if (count == 1) sscanf(buffer,"%s%s",message_type,message_verb);
ansond 0:a3fc1c6ef150 151 if (count == 2) sscanf(buffer,"%s%s%s",message_type,message_verb,message_value);
ansond 0:a3fc1c6ef150 152 if (count == 3) sscanf(buffer,"%s%s%s%s",message_type,message_verb,message_value,message_opt);
ansond 0:a3fc1c6ef150 153
ansond 0:a3fc1c6ef150 154 // DEBUG
ansond 0:a3fc1c6ef150 155 //this->logger()->log("Raw Payload: %s, length: %d",payload,payload_length);
ansond 0:a3fc1c6ef150 156 //this->logger()->log("Buffer: %s, length: %d",buffer,strlen(buffer));
ansond 0:a3fc1c6ef150 157 //this->logger()->log("Parsed Payload: Type: [%s] Name: [%s] Verb: [%s] Value: [%s]",message_type,message_name,message_verb,message_value);
ansond 0:a3fc1c6ef150 158
ansond 0:a3fc1c6ef150 159 // load endpoints
ansond 0:a3fc1c6ef150 160 if (message_type != NULL && strcmp(message_type,IOC_ENDPOINT_VERB) == 0) { // Endpoint
ansond 0:a3fc1c6ef150 161 if (message_verb != NULL && strcmp(message_verb,IOC_REQUEST_LOAD_ALL_VERB) == 0) { // load
ansond 0:a3fc1c6ef150 162 if (message_value != NULL && strcmp(message_value,IOC_ENDPOINT_ALL_VERB) == 0) { // all
ansond 0:a3fc1c6ef150 163 // load up our endpoints
ansond 7:8a4a61202b36 164 endpoint->loadPersonalities();
ansond 7:8a4a61202b36 165 endpoint->updatePersonalities();
ansond 0:a3fc1c6ef150 166 }
ansond 0:a3fc1c6ef150 167 else if (message_value != NULL && strcmp(message_value,this->m_endpoint_name) == 0) {
ansond 0:a3fc1c6ef150 168 // load up our endpoints (us only)
ansond 7:8a4a61202b36 169 endpoint->loadPersonalities();
ansond 7:8a4a61202b36 170 endpoint->updatePersonalities();
ansond 0:a3fc1c6ef150 171 }
ansond 0:a3fc1c6ef150 172 }
ansond 0:a3fc1c6ef150 173
ansond 0:a3fc1c6ef150 174 else if (message_verb != NULL && strcmp(message_verb,IOC_REQUEST_UPDATE_ALL_VERB) == 0) { // update
ansond 0:a3fc1c6ef150 175 if (message_value != NULL && strcmp(message_value,IOC_ENDPOINT_ALL_VERB) == 0) { // all
ansond 0:a3fc1c6ef150 176 // update our endpoints
ansond 7:8a4a61202b36 177 endpoint->updatePersonalities();
ansond 0:a3fc1c6ef150 178 }
ansond 0:a3fc1c6ef150 179 else {
ansond 0:a3fc1c6ef150 180 // update just our endpoint
ansond 0:a3fc1c6ef150 181 int index = -1;
ansond 0:a3fc1c6ef150 182 if (message_name != NULL) {
ansond 7:8a4a61202b36 183 index = endpoint->indexOfPersonality((char *)message_name);
ansond 0:a3fc1c6ef150 184 if (index >= 0) {
ansond 0:a3fc1c6ef150 185 if (message_verb != NULL && strcmp(message_verb,IOC_REQUEST_UPDATE_ALL_VERB) == 0) {
ansond 0:a3fc1c6ef150 186 // update our endpoint
ansond 7:8a4a61202b36 187 endpoint->updatePersonality(index);
ansond 0:a3fc1c6ef150 188 }
ansond 0:a3fc1c6ef150 189 }
ansond 0:a3fc1c6ef150 190 }
ansond 0:a3fc1c6ef150 191 }
ansond 0:a3fc1c6ef150 192 }
ansond 0:a3fc1c6ef150 193 }
ansond 0:a3fc1c6ef150 194
ansond 0:a3fc1c6ef150 195 // change a resource value
ansond 0:a3fc1c6ef150 196 if (message_type != NULL && strcmp(message_type,IOC_CHANGE_VERB) == 0) {
ansond 0:a3fc1c6ef150 197 if (message_name != NULL) {
ansond 0:a3fc1c6ef150 198 // destined for our lights?
ansond 7:8a4a61202b36 199 int index = endpoint->indexOfPersonality((char *)message_name);
ansond 0:a3fc1c6ef150 200 if (index >= 0) {
ansond 0:a3fc1c6ef150 201 if (message_verb != NULL) {
ansond 0:a3fc1c6ef150 202 // map the parameter to one of ours
ansond 0:a3fc1c6ef150 203 char *mapped_resource = this->mapIOCResourceToEndpointResource((char *)message_verb);
ansond 0:a3fc1c6ef150 204 if (mapped_resource != NULL) {
ansond 0:a3fc1c6ef150 205 if (message_value != NULL) {
ansond 0:a3fc1c6ef150 206 EmulatedResourceFactory *factory = (EmulatedResourceFactory *)endpoint->getResources(index);
ansond 0:a3fc1c6ef150 207 bool success = factory->setResourceValue(mapped_resource,message_value);
ansond 0:a3fc1c6ef150 208
ansond 0:a3fc1c6ef150 209 // end the resource value back over MQTT
ansond 0:a3fc1c6ef150 210 this->sendResult(message_name,message_verb,message_value,success);
ansond 0:a3fc1c6ef150 211 }
ansond 0:a3fc1c6ef150 212 }
ansond 31:e5950e0677be 213
ansond 31:e5950e0677be 214 // for Dimming, we also want to refresh our record (in whole) at the IOC
ansond 31:e5950e0677be 215 if (this->isDimmingResource(message_verb)) {
ansond 31:e5950e0677be 216 // send a fresh update to the IOC - just us...
ansond 31:e5950e0677be 217 int index = endpoint->indexOfPersonality((char *)message_name);
ansond 31:e5950e0677be 218 if (index >= 0) endpoint->updatePersonality(index);
ansond 31:e5950e0677be 219 }
ansond 0:a3fc1c6ef150 220 }
ansond 0:a3fc1c6ef150 221 }
ansond 0:a3fc1c6ef150 222 }
ansond 0:a3fc1c6ef150 223 }
ansond 0:a3fc1c6ef150 224
ansond 0:a3fc1c6ef150 225 // get a resource value
ansond 0:a3fc1c6ef150 226 if (message_type != NULL && strcmp(message_type,IOC_REQUEST_VALUE_VERB) == 0) {
ansond 0:a3fc1c6ef150 227 if (message_name != NULL) {
ansond 0:a3fc1c6ef150 228 // destined for our lights?
ansond 7:8a4a61202b36 229 int index = endpoint->indexOfPersonality((char *)message_name);
ansond 0:a3fc1c6ef150 230 if (index >= 0) {
ansond 0:a3fc1c6ef150 231 if (message_verb != NULL) {
ansond 0:a3fc1c6ef150 232 // map the parameter to one of ours
ansond 0:a3fc1c6ef150 233 char *mapped_resource = this->mapIOCResourceToEndpointResource((char *)message_verb);
ansond 0:a3fc1c6ef150 234 if (mapped_resource != NULL) {
ansond 0:a3fc1c6ef150 235 EmulatedResourceFactory *factory = (EmulatedResourceFactory *)endpoint->getResources(index);
ansond 0:a3fc1c6ef150 236 strcpy(message_value,factory->getResourceValue((char *)mapped_resource));
ansond 0:a3fc1c6ef150 237 bool success = false; if (message_value != NULL) success = true;
ansond 0:a3fc1c6ef150 238
ansond 0:a3fc1c6ef150 239 // log resource get
ansond 0:a3fc1c6ef150 240 if (success) this->logger()->log("Resource: %s (%s) Value: %s",message_verb,mapped_resource,message_value);
ansond 0:a3fc1c6ef150 241
ansond 0:a3fc1c6ef150 242 // end the resource value back over MQTT
ansond 0:a3fc1c6ef150 243 this->sendResult(message_name,message_verb,message_value,success);
ansond 0:a3fc1c6ef150 244 }
ansond 0:a3fc1c6ef150 245 }
ansond 0:a3fc1c6ef150 246 }
ansond 0:a3fc1c6ef150 247 }
ansond 0:a3fc1c6ef150 248 }
ansond 0:a3fc1c6ef150 249 }
ansond 0:a3fc1c6ef150 250 else {
ansond 0:a3fc1c6ef150 251 // message not bound for our node
ansond 0:a3fc1c6ef150 252 //this->logger()->log("MQTT Message: %s not for us: %s... ignoring...",payload,endpoint_name);
ansond 0:a3fc1c6ef150 253 ;
ansond 0:a3fc1c6ef150 254 }
ansond 0:a3fc1c6ef150 255 }
ansond 0:a3fc1c6ef150 256
ansond 31:e5950e0677be 257 // is this the dimming resource?
ansond 31:e5950e0677be 258 bool MQTTTransport::isDimmingResource(char *resource) {
ansond 31:e5950e0677be 259 bool isDimming = false;
ansond 31:e5950e0677be 260
ansond 31:e5950e0677be 261 if (resource != NULL && strcmp(resource,"Dimming") == 0) isDimming = true;
ansond 31:e5950e0677be 262
ansond 31:e5950e0677be 263 return isDimming;
ansond 31:e5950e0677be 264 }
ansond 31:e5950e0677be 265
ansond 0:a3fc1c6ef150 266 // send result back to MQTT
ansond 0:a3fc1c6ef150 267 void MQTTTransport::sendResult(char *endpoint_name,char *resource_name,char *value,bool success) {
ansond 0:a3fc1c6ef150 268 if (this->m_connected == true) {
ansond 0:a3fc1c6ef150 269 // send the response back to MQTT
ansond 0:a3fc1c6ef150 270 this->logger()->log("Sending Response back to MQTT...");
ansond 0:a3fc1c6ef150 271 char message[MAX_MQTT_MESSAGE_LENGTH+1];
ansond 0:a3fc1c6ef150 272 memset(message,0,MAX_MQTT_MESSAGE_LENGTH+1);
ansond 0:a3fc1c6ef150 273 char *str_success = IOC_RESPONSE_OK; if (!success) str_success = IOC_RESPONSE_FAILED;
ansond 0:a3fc1c6ef150 274 sprintf(message,IOC_RESPONSE_TEMPLATE,IOC_RESPONSE_VERB,endpoint_name,resource_name,value,str_success);
ansond 49:965a65122c0f 275
ansond 49:965a65122c0f 276 // build out the message
ansond 49:965a65122c0f 277 MQTT::Message mqtt_message;
ansond 49:965a65122c0f 278 mqtt_message.qos = MQTT::QOS0;
ansond 49:965a65122c0f 279 mqtt_message.retained = false;
ansond 49:965a65122c0f 280 mqtt_message.dup = false;
ansond 49:965a65122c0f 281 mqtt_message.payload = (void*)message;
ansond 49:965a65122c0f 282 mqtt_message.payloadlen = strlen(message)+1;
ansond 49:965a65122c0f 283
ansond 49:965a65122c0f 284 // publish...
ansond 49:965a65122c0f 285 int sent = this->m_mqtt->publish(this->getTopic(),&mqtt_message);
ansond 49:965a65122c0f 286 if (sent == 0) {
ansond 0:a3fc1c6ef150 287 this->logger()->log("Result sent successfully");
ansond 0:a3fc1c6ef150 288 this->logger()->blinkTransportTxLED();
ansond 0:a3fc1c6ef150 289 }
ansond 0:a3fc1c6ef150 290 else {
ansond 0:a3fc1c6ef150 291 this->logger()->log("Result send FAILED");
ansond 0:a3fc1c6ef150 292 }
ansond 0:a3fc1c6ef150 293 }
ansond 0:a3fc1c6ef150 294 else {
ansond 0:a3fc1c6ef150 295 // unable to send the response
ansond 0:a3fc1c6ef150 296 this->logger()->log("Unable to send response back to MQTT. Not connected.");
ansond 0:a3fc1c6ef150 297 }
ansond 0:a3fc1c6ef150 298 }
ansond 0:a3fc1c6ef150 299
ansond 0:a3fc1c6ef150 300 char *MQTTTransport::mapIOCResourceToEndpointResource(char *ioc_name) { return this->getMap()->iocNameToEndpointName(ioc_name); }
ansond 0:a3fc1c6ef150 301
ansond 0:a3fc1c6ef150 302 char *MQTTTransport::makeID(char *id_template,char *buffer) {
ansond 0:a3fc1c6ef150 303 MBEDEndpoint *endpoint = (MBEDEndpoint *)this->getEndpoint();
ansond 0:a3fc1c6ef150 304 int instance_id = rand()%100;
ansond 0:a3fc1c6ef150 305 if (endpoint != NULL) instance_id = endpoint->getInstanceID();
ansond 0:a3fc1c6ef150 306 srand(time(0));
ansond 0:a3fc1c6ef150 307 srand(rand());
ansond 0:a3fc1c6ef150 308 sprintf(buffer,id_template,rand()%MQTT_MAXID_VALUE,instance_id);
ansond 0:a3fc1c6ef150 309 return buffer;
ansond 0:a3fc1c6ef150 310 }
ansond 0:a3fc1c6ef150 311
ansond 0:a3fc1c6ef150 312 // is this message a PONG message?
ansond 0:a3fc1c6ef150 313 bool MQTTTransport::isPongMessage(char *topic,char *payload,int payload_length) {
ansond 0:a3fc1c6ef150 314 bool isPong = false;
ansond 0:a3fc1c6ef150 315 char verb[MQTT_PING_VERB_LEN+1];
ansond 0:a3fc1c6ef150 316 char end[MQTT_PING_VERB_LEN+1];
ansond 0:a3fc1c6ef150 317 int counter = 0;
ansond 0:a3fc1c6ef150 318
ansond 0:a3fc1c6ef150 319 // clean
ansond 0:a3fc1c6ef150 320 memset(verb,0,MQTT_PING_VERB_LEN+1);
ansond 0:a3fc1c6ef150 321 memset(end,0,MQTT_PING_VERB_LEN+1);
ansond 0:a3fc1c6ef150 322
ansond 0:a3fc1c6ef150 323 // make sure this is for us...
ansond 0:a3fc1c6ef150 324 char *topic_ep_name = this->getEndpointNameFromTopic(topic);
ansond 0:a3fc1c6ef150 325 if (topic_ep_name != NULL && strcmp(topic_ep_name,this->m_endpoint_name) == 0) {
ansond 0:a3fc1c6ef150 326 // parse the payload
ansond 0:a3fc1c6ef150 327 for(int i=0;payload != NULL && i<payload_length;++i) if (payload[i] == ':') payload[i] = ' ';
ansond 0:a3fc1c6ef150 328 sscanf(payload,"%s%d",verb,&counter);
ansond 0:a3fc1c6ef150 329
ansond 0:a3fc1c6ef150 330 // check the contents to make sure its for us...
ansond 0:a3fc1c6ef150 331 //this->logger()->log("isPongMessage: verb: %s counter %d ping_counter: %d",verb,counter,this->m_ping_counter);
ansond 0:a3fc1c6ef150 332 if (strcmp(verb,"pong") == 0 && counter == this->m_ping_counter) {
ansond 0:a3fc1c6ef150 333 // its a PONG message to our PING...
ansond 0:a3fc1c6ef150 334 isPong = true;
ansond 0:a3fc1c6ef150 335 }
ansond 0:a3fc1c6ef150 336 }
ansond 0:a3fc1c6ef150 337
ansond 0:a3fc1c6ef150 338 // return isPong status
ansond 0:a3fc1c6ef150 339 return isPong;
ansond 0:a3fc1c6ef150 340 }
ansond 0:a3fc1c6ef150 341
ansond 0:a3fc1c6ef150 342
ansond 0:a3fc1c6ef150 343 // process this PONG message
ansond 0:a3fc1c6ef150 344 void MQTTTransport::processPongMessage(char *payload,int payload_length) {
ansond 0:a3fc1c6ef150 345 // DEBUG
ansond 0:a3fc1c6ef150 346 //this->logger()->log("Received PONG: counter=%d",this->m_ping_counter);
ansond 0:a3fc1c6ef150 347
ansond 0:a3fc1c6ef150 348 // simply increment the counter
ansond 0:a3fc1c6ef150 349 ++this->m_ping_counter;
ansond 0:a3fc1c6ef150 350
ansond 0:a3fc1c6ef150 351 // reset counter if maxed
ansond 0:a3fc1c6ef150 352 if (this->m_ping_counter >= MQTT_MAX_COUNTER) this->m_ping_counter = 1;
ansond 0:a3fc1c6ef150 353 }
ansond 0:a3fc1c6ef150 354
ansond 0:a3fc1c6ef150 355 // send a PING message
ansond 0:a3fc1c6ef150 356 bool MQTTTransport::sendPingMessage() {
ansond 0:a3fc1c6ef150 357 bool sent = false;
ansond 0:a3fc1c6ef150 358 char message[MAX_MQTT_MESSAGE_LENGTH+1];
ansond 0:a3fc1c6ef150 359
ansond 0:a3fc1c6ef150 360 // initialize...
ansond 0:a3fc1c6ef150 361 memset(message,0,MAX_MQTT_MESSAGE_LENGTH+1);
ansond 0:a3fc1c6ef150 362
ansond 0:a3fc1c6ef150 363 // build message
ansond 0:a3fc1c6ef150 364 sprintf(message,"ping:%s:%d:",this->m_endpoint_name,this->m_ping_counter);
ansond 0:a3fc1c6ef150 365
ansond 0:a3fc1c6ef150 366 // send the message over the ping/pong topic
ansond 0:a3fc1c6ef150 367 //this->logger()->log("Sending PING: counter=%d",this->m_ping_counter);
ansond 49:965a65122c0f 368
ansond 49:965a65122c0f 369 // build out the message
ansond 49:965a65122c0f 370 MQTT::Message mqtt_message;
ansond 49:965a65122c0f 371 mqtt_message.qos = MQTT::QOS0;
ansond 49:965a65122c0f 372 mqtt_message.retained = false;
ansond 49:965a65122c0f 373 mqtt_message.dup = false;
ansond 49:965a65122c0f 374 mqtt_message.payload = (void*)message;
ansond 49:965a65122c0f 375 mqtt_message.payloadlen = strlen(message)+1;
ansond 49:965a65122c0f 376
ansond 49:965a65122c0f 377 // publish...
ansond 49:965a65122c0f 378 sent = this->m_mqtt->publish(MQTT_PING_SEND_TOPIC,&mqtt_message);
ansond 49:965a65122c0f 379 if (sent == 0) {
ansond 0:a3fc1c6ef150 380 // send succeeded
ansond 0:a3fc1c6ef150 381 //this->logger()->log("PING %d sent successfully",this->m_ping_counter);
ansond 0:a3fc1c6ef150 382 this->logger()->blinkTransportTxLED();
ansond 0:a3fc1c6ef150 383
ansond 0:a3fc1c6ef150 384 // wait for 1 second
ansond 0:a3fc1c6ef150 385 wait_ms(1000);
ansond 0:a3fc1c6ef150 386 }
ansond 0:a3fc1c6ef150 387 else {
ansond 20:ee03f10c074e 388 // fail silently now...
ansond 20:ee03f10c074e 389 ;
ansond 20:ee03f10c074e 390
ansond 0:a3fc1c6ef150 391 // send failed! - reconnect
ansond 20:ee03f10c074e 392 //this->logger()->log("PING send %d FAILED... (re)connecting...",this->m_ping_counter);
ansond 0:a3fc1c6ef150 393
ansond 0:a3fc1c6ef150 394 // attempt reconnect
ansond 20:ee03f10c074e 395 //this->logger()->log("PING send failed - re-connecting MQTT...");
ansond 20:ee03f10c074e 396 //this->disconnect();
ansond 20:ee03f10c074e 397 //sent = this->connect();
ansond 20:ee03f10c074e 398 //if (sent) this->logger()->log("PING %d: MQTT reconnection successful...",this->m_ping_counter);
ansond 20:ee03f10c074e 399 //else this->logger()->log("PING %d: resend failed giving up...",this->m_ping_counter);
ansond 0:a3fc1c6ef150 400 }
ansond 0:a3fc1c6ef150 401
ansond 0:a3fc1c6ef150 402 // return our status
ansond 0:a3fc1c6ef150 403 return sent;
ansond 0:a3fc1c6ef150 404 }
ansond 0:a3fc1c6ef150 405
ansond 29:ac6390032cec 406 static char _mqtt_id[MQTT_ENDPOINT_IDLEN+1];
ansond 29:ac6390032cec 407
ansond 0:a3fc1c6ef150 408 // connect up MQTT
ansond 0:a3fc1c6ef150 409 bool MQTTTransport::connect() {
ansond 29:ac6390032cec 410 memset(_mqtt_id,0,(MQTT_ENDPOINT_IDLEN+1));
ansond 0:a3fc1c6ef150 411 if (this->m_connected == false) {
ansond 49:965a65122c0f 412 this->logger()->log("MQTT Init: %s:%d...",MQTT_HOSTNAME,MQTT_HOSTPORT);
ansond 49:965a65122c0f 413 if (this->m_ipstack->connect(MQTT_HOSTNAME,MQTT_HOSTPORT)) {
ansond 49:965a65122c0f 414
ansond 49:965a65122c0f 415 MQTTPacket_connectData data = MQTTPacket_connectData_initializer;
ansond 49:965a65122c0f 416 data.MQTTVersion = 3;
ansond 49:965a65122c0f 417 data.clientID.cstring = this->makeID(MQTT_ENDPOINT_ID,_mqtt_id);
ansond 49:965a65122c0f 418 this->logger()->log("MQTT Connect: ID: %s...",data.clientID.cstring);
ansond 49:965a65122c0f 419
ansond 49:965a65122c0f 420 int rc = this->m_mqtt->connect(&data);
ansond 49:965a65122c0f 421 if (rc != 0) {
ansond 49:965a65122c0f 422 this->logger()->log("Error from MQTT connect: %d", rc);
ansond 49:965a65122c0f 423 }
ansond 49:965a65122c0f 424 else {
ansond 49:965a65122c0f 425 this->logger()->log("MQTT Subscribe: Topic: %s...",this->getTopic());
ansond 49:965a65122c0f 426 if ((rc = this->m_mqtt->subscribe(this->getTopic(),MQTT::QOS1,_mqtt_message_handler)) != 0) {
ansond 49:965a65122c0f 427 this->logger()->log("MQTT Subscribe: Topic: %s FAILED: %d", this->getTopic(),rc);
ansond 49:965a65122c0f 428 this->logger()->turnLEDRed();
ansond 49:965a65122c0f 429 this->m_connected = false;
ansond 49:965a65122c0f 430 }
ansond 49:965a65122c0f 431 else {
ansond 49:965a65122c0f 432 if ((rc = this->m_mqtt->subscribe(MQTT_IOC_ALL_TOPIC, MQTT::QOS1,_mqtt_message_handler)) == 0) {
ansond 0:a3fc1c6ef150 433 this->logger()->log("MQTT CONNECTED.");
ansond 0:a3fc1c6ef150 434 this->m_connected = true;
ansond 0:a3fc1c6ef150 435 }
ansond 0:a3fc1c6ef150 436 else {
ansond 49:965a65122c0f 437 this->logger()->log("MQTT Subscribe(ALL): Topic: %s FAILED: %d", MQTT_IOC_ALL_TOPIC,rc);
ansond 0:a3fc1c6ef150 438 this->logger()->turnLEDRed();
ansond 0:a3fc1c6ef150 439 this->m_connected = false;
ansond 0:a3fc1c6ef150 440 }
ansond 49:965a65122c0f 441 }
ansond 49:965a65122c0f 442 }
ansond 49:965a65122c0f 443 }
ansond 49:965a65122c0f 444 else {
ansond 49:965a65122c0f 445 this->logger()->log("MQTT Connect FAILED");
ansond 0:a3fc1c6ef150 446 this->logger()->turnLEDRed();
ansond 0:a3fc1c6ef150 447 this->m_connected = false;
ansond 49:965a65122c0f 448 }
ansond 49:965a65122c0f 449 }
ansond 49:965a65122c0f 450 else {
ansond 0:a3fc1c6ef150 451 this->logger()->log("MQTT already connected (OK)");
ansond 49:965a65122c0f 452 }
ansond 49:965a65122c0f 453 return this->m_connected;
ansond 0:a3fc1c6ef150 454 }
ansond 0:a3fc1c6ef150 455
ansond 0:a3fc1c6ef150 456 // disconnect from MQTT
ansond 0:a3fc1c6ef150 457 bool MQTTTransport::disconnect() {
ansond 0:a3fc1c6ef150 458 if (this->m_mqtt != NULL) {
ansond 0:a3fc1c6ef150 459 this->logger()->log("MQTT Unsubscribing from: %s...",this->getTopic());
ansond 49:965a65122c0f 460 int rc = this->m_mqtt->unsubscribe(this->getTopic());
ansond 49:965a65122c0f 461 if (rc != 0)
ansond 49:965a65122c0f 462 this->logger()->log("Error in unsubscribing from %s ErrorCode: %d", this->getTopic(),rc);
ansond 49:965a65122c0f 463 if ((rc = this->m_mqtt->unsubscribe(MQTT_IOC_ALL_TOPIC)) != 0)
ansond 49:965a65122c0f 464 this->logger()->log("Error in unsubscribing from %s ErrorCode: %d", MQTT_IOC_ALL_TOPIC,rc);
ansond 0:a3fc1c6ef150 465 this->logger()->log("MQTT Disconnecting...");
ansond 49:965a65122c0f 466 if ((rc = this->m_mqtt->disconnect()) != 0)
ansond 49:965a65122c0f 467 this->logger()->log("Error from disconnect: %d", rc);
ansond 0:a3fc1c6ef150 468 }
ansond 0:a3fc1c6ef150 469 else {
ansond 0:a3fc1c6ef150 470 this->logger()->log("MQTT already disconnected (OK)");
ansond 0:a3fc1c6ef150 471 }
ansond 0:a3fc1c6ef150 472 this->m_connected = false;
ansond 0:a3fc1c6ef150 473 return true;
ansond 0:a3fc1c6ef150 474 }
ansond 0:a3fc1c6ef150 475
ansond 0:a3fc1c6ef150 476 // check transport and process stuff
ansond 0:a3fc1c6ef150 477 void MQTTTransport::checkAndProcess() {
ansond 0:a3fc1c6ef150 478 // process any MQTT messages
ansond 0:a3fc1c6ef150 479 if (this->m_mqtt != NULL && this->m_connected == true) {
ansond 49:965a65122c0f 480 bool connected = this->m_mqtt->yield(200);
ansond 0:a3fc1c6ef150 481 if (connected) {
ansond 0:a3fc1c6ef150 482 this->logger()->blinkTransportRxLED();
ansond 0:a3fc1c6ef150 483 }
ansond 32:9a024a6af2fb 484 //else {
ansond 32:9a024a6af2fb 485 // this->logger()->log("Attempting reconnection to MQTT in checkAndProcess...");
ansond 32:9a024a6af2fb 486 // this->disconnect();
ansond 32:9a024a6af2fb 487 // Thread::wait(15000);
ansond 32:9a024a6af2fb 488 // this->connect();
ansond 32:9a024a6af2fb 489 //}
ansond 0:a3fc1c6ef150 490 }
ansond 0:a3fc1c6ef150 491
ansond 0:a3fc1c6ef150 492 // send a PING if time for it
ansond 0:a3fc1c6ef150 493 --this->m_ping_countdown;
ansond 0:a3fc1c6ef150 494 if (this->m_ping_countdown <= 0) {
ansond 0:a3fc1c6ef150 495 //this->logger()->log("MQTT: Sending PING...");
ansond 0:a3fc1c6ef150 496 this->m_ping_countdown = MQTT_PING_COUNTDOWN;
ansond 0:a3fc1c6ef150 497 this->sendPingMessage();
ansond 0:a3fc1c6ef150 498 }
ansond 0:a3fc1c6ef150 499 }